LED street lamps have rapidly spread in recent years, but the American Medical Association (AMA) has issued a formal statement recently warning that if LED street lights are too white and too bright, a large amount of blue light will be released, and people may not only be exposed to glare when driving. The probability of a car accident and the sleep cycle are also affected.
CNN and National Public Radio (NPR) reported that AMA unanimously adopted a statement at the annual meeting on the 14th of this month to provide guidance on how to choose LED street lights. The purpose is to make LED street lights "for human health and Environmental damage is minimized."
AMA recommends that nighttime outdoor lighting, especially street lights, should have a color temperature of less than 3000K. The color temperature measurement is based on the blue, green, yellow, and red light in the light source. The higher the color temperature, the brighter the light is, and the more blue light content there is, the more glare is generated, which affects the driver's line of sight accuracy and safety.
AMA also said that blue light is more likely to inhibit melanoma secretion in the night than other light sources, which may lead to shortened sleep time, poor sleep quality, poor mental performance during the day and even obesity.
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